Check-valve.



PATENTED DEC. 20, 1904. v. M. DENMAN.

CHECK VALVE;

APPLICATION FILED APR. 30, 1904. N0 MODEL.

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Hi /4 I I 7 F I G 3- f .1 Li 7 Witnesses Jammy/72 m venor,

I I 1 'l /44 1" 7 UNITED STATES Patented December 20, 1904.

PATENT OE IcE.

CHECK-VALVE.

SPECIFICATION forming part of Letters Patent No. 777,942, dated December 20, 1904.

Application filed April 30,1904. Serial No. 205,821.

To all 1072 0772 ii may concern:

Be it known that I, VIo'roE M. DENMAN, a citizen of the United States, residing at Roberts, in the county of Escambia and State of Alabama, have invented a new and useful Check-Valve, of which the following is a specification. i

This invention relates to check-valves, and has for its object to provide for the automatic rotation of the valve under the influence of the water or other fluid passing through the valvecasing, and thereby obtain an automatic grinding of the valve-seat, so as to prevent the accumulation of sediment thereon and insure a prompt and effective seating of the valve without interfering with the free passage of the fluid through the valve.

With this and other objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size, and minor details may be made within the scope of the claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings, Figure 1 is a longitudinal sectional view of a check-valve embodying the features of the present invention. Fig. 2 is similar view on the line 2 2 of Fig. 1. Fig. 3 is a cross-sectional view on the line 3 3 of Fig. 1. Fig. 4c is a detail view of the ring for holding the nozzle in place. Fig. 5 is a detail perspective view of the nozzle.

Like characters of reference designate corresponding parts in each and every figure of the drawings.

To accomplish the object of the present invention, I propose to employ within the valvecasing a nozzle to direct the incoming fluid against the guide-wings of the movable valve .member in such a manner as to effect rotation thereof without interfering with the usual slidable movement of the valve toward and away from its seat.

In carrying out the invention I employ a casing. 1 of usual form, having a tubular coupling 2 at one end constituting the inlet of the valve-casing and an outlet-coupling 3 at the I opposite end of the casing, the inlet-coupling against the valve for rotating the same.

Within the body of the casing is an inwardly and downwardly inclined partition L at the inlet side thereof and an inwardly and upwardly inclined partition 5 at the outlet side of the casing, the inner ends of the partitions terminating at about the axial line of the casing and are connected by means of a horizontal partition 6, having a vertical water-passage 7 formed therein, the edge of the opening being beveled inwardly and downwardly to form the usual valve-seat. The valve 8 is in the nature of a disk having a beveled peripheral edge to lit the valve-seat and provided with a plurality of pendent guide-wings 9, disposed radially with respect to the valvedisk and working through the valve-seat as a guide. A cylindrical stem 10 rises centrally from the top of the valve-disk and works in a guide-socket 11 in the removable plug or cap 12, fitted within a screw-threaded opening in the top of the casing.

l/Vithin the inlet-coupling portion 2 is a tapered or conical nozzle 13, which is located in front of the partition 4:, with its inner smaller end disposed at one side of the longitudinal center of the valve-casing, so as to direct the incoming water or other fluid against only one ofthe guide-wings 9, thereby to rotate the valve and cause the same to automatically grind the valve-seat and effectually prevent the accumulation of sediment thereon. It will be understood that this rotatable movement of the valve does not interfere in any manner whatsoever with the elevation thereof to permit of the liquid passing through the water-passage 7 and out through the outlet-coupling 3, while at the same time it is automatic and effects the grinding of the valveseat in a very simple manner.

The nozzle is removably held in place by means of a clench-ring 14, which is inserted into the inlet-coupling 2 and against the outer end of the nozzle. This ring is externally screw-threaded and is provided with a pair of inner shoulders 15 for cooperation with a wrench to facilitate the insertion and removal of the ring into and out of the internally-screwthreaded inlet end of the valve-casing. T he outer end of the nozzle is provided with a pair of external diametrically opposite shoulders or projections 16, which engage shoulders 17 upon the interior of the valve-casing and against which they are clamped by the ring 14, so as to rigidly maintain the nozzle in place.

Having thus described the construction and operation of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A check-valve having a slidable valve member capable of rotation and provided with a guide-wing, the inlet of the valve being set at an angle With respect to the direction of the slidable movement of the movable valve member, and a nozzle to direct the incoming fluid against one side of the guide-wing to rotate the valve.

2. A check-valve comprising a casing having a valve-seat, a slidable valve controlling the seat and provided at one side with a eylindrical stem working in a cylindrical guidesocket and having radial guide-wings at its opposite side, and a nozzle fitted within the casing and disposed to direct the incoming fluid against one of the wings at one side of its longitudinal axis to rotate the valve and effect an automatic grinding of the valve-seat.

3. A check-valve comprising a casing having a valve-seat, a slidable valve controlling the seat and provided With a guide-Wing, a nozzle fitted within the inlet of the casing with its discharge end disposed to direct the incoming fluid against awing at one side of the longitudinal axis of the valve to rotate the same, the casing and the nozzle being provided with abutted shoulders, and a screw-threaded ring fitted into the casing and clamping the shoulders of the nozzle between the ring and the shoulders of the valve-casing.

4. A check-valve comprising a casing having an internally-screwthreaded inlet and an outlet, a valve-seat disposed transversely between the inlet and the outlet, a slidable and rotatable valve for the seat provided With a plurality of substantially radial wings at the inlet side of the valve-seat, shoulders within VICTOR M. DENMAN.

Witnesses:

MAUI) CANER, E. J. WILLIAMS. 

